Thermoelectric properties of Ca0.9Yb0.1MnO3-x prepared by spark plasma sintering in air atmosphere

SCRIPTA MATERIALIA

卷:68

Article

Noudem, Jacques G.^1,2  Quetel-Weben, Simon¹  Retoux, Richard¹  Chevallier, Geoffroy³  Estournes, Claude³ 

[1] CNRS, ENSICAEN, CRISMAT, UMR 6508, F-14050 Caen 4, France

[2] Univ Caen Basse Normandie, LUSAC, F-50130 Cherbourg, France

[3] CNRS, UMR 5085, Inst Carnot CIRIMAT, F-31062 Toulouse 9, France

关键词: Ca0.9Yb0.1MnO3-x;    Spark plasma sintering;    Air processing;    Microstructure;    Oxide thermoelectric properties;   

DOI  :  10.1016/j.scriptamat.2013.02.059

来源: Elsevier

【 摘 要 】

In this paper we report the densification of Ca0.9Yb0.1MnO3-x ceramics by spark plasma sintering (SPS) in different atmospheres and using different tools. The thermoelectric properties of these ceramics are reported and compared to those of ceramics obtained by conventional sintering. This study clearly demonstrated the possibility for processing oxide materials by SPS under air atmosphere and overcomes the problem of reduction due to the low oxygen partial pressure (graphitic environment, dynamic vacuum or neutral atmosphere) commonly encountered. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free